Defendant claims that it is entitled to summary judgment based upon plaintiff’s inability to personally identify the manufacturer and/or the model number of the chair that caused his injury. In support of its claim, defendant points to plaintiff’s examination before trial which reveals that plaintiff does not have any direct, first-hand knowledge of the identity of the manufacturer or the model number of the chair.
As the party seeking summary judgment, defendant had the initial burden of establishing its defense sufficiently to warrant an award of judgment in its favor as a matter of law
(see, Zuckerman v City of New York, 49 NY2d 557, 562). The burden is not met by a conclusory denial of responsibility
(see, Vasquez v City of New York, 210 AD2d 156); nor is the burden met by pointing to gaps in plaintiffs’ proof
(see, Larkin Trucking Co. v Lisbon Tire Mart, 185 AD2d 614, 615). Rather, a defendant must affirmatively demonstrate the merit of its defense " ' by tender of evidentiary proof in admissible form’ ”
(Zuckerman v City of New York, supra, at 562, quoting
Friends of Animals v Associated Fur Mfrs., 46 NY2d 1065, 1067-1068). In the case of a defendant who denies having manufactured an allegedly defective product, the burden is met when the defendant supports its summary judgment motion with affirmative evidence that it did not manufacture the product that caused the injury
(see, e.g., Kessler v Joe Hornstein, Inc., 207 AD2d 278;
Whelan v GTE Sylvania, 182 AD2d 446).
Here, however, defendant submitted no affirmative evidence that it did not manufacture the chair that caused plaintiff’s injury. Instead, defendant points to gaps in plaintiffs’ case, contending that plaintiffs’ evidence did not establish the identity of the manufacturer, which is insufficient to meet the burden imposed upon the party seeking summary judgment (see, Christiana v Joyce Intl., 198 AD2d 690; Larkin Trucking Co. v Lisbon Tire Mart, supra). We also note that the record contains a copy of an order to show cause which directs plaintiff’s employer to produce a certain swivel type desk chair "involved in an incident which occurred on [the date of plaintiff’s injury]”. The chair was apparently examined by representatives of both parties. Nevertheless, defendant’s motion papers contain no evidence concerning the chair produced by plaintiff’s employer. In particular, there is no evidence that defendant did not manufacture the chair; nor is there any evidence that the chair is not relevant to plaintiff’s injuries. It is clear that defendant failed to establish its defense sufficiently to warrant judgment in its favor as a matter of law and, therefore, the sufficiency of plaintiffs’ opposition papers is irrelevant (see, Alvarez v Prospect Hosp., 68 NY2d 320, 324).